Oil Boiler problems?

We have a myson oil boiler which has worked fine for years, until we had a new radiator fitted in bathroom and the water system had to be drained and radiators bled. Since then the boiler has heated the radiators, but has not heated up the water. The boiler has also cut out a few times. Any advice will be greatly appreciated as we have no hot water.Oil Boiler problems?
you need to call your HVAC people back to finish their job. If the burner in your boiler is running, then there is something incorrect in the water system.


EDIT: pay attention to what the guy below me said. He makes an excellent point about finding a GOOD hvac company.Oil Boiler problems?
You didn't give enuf info. Hot water or steam boiler? Why would anyone drain the water anyhow? That suggests a circulating hot water system. Old boilers do collect crud in their water, but it normally mostly stays in suspension. However- 'stale' water has no oxygen left to corrode your system. If the serviceperson left the boiler empty for any length of time it's likely that under dry conditions the 'crud' hardened on the outside of the hot water coil and is acting as insulation which won't allow the water to heat. The coil IS probably replaceable, but I have no idea how many $.


Re the 'boiler' cutting out- that's most likely the oil burner- which would need its annual cleaning, but the boiler does have safety devices to prevent it from operating under dangerous conditions. That's less likely, but still possible.


For just domestic hot water a separate water heater would be simpler and likely less expensive. BTW- a new boiler would most likely be smaller and much more efficient. Better ask around for a GOOD serviceman. It's worth a try to ask the person who delivers your fuel oil.